pitkin



2 Sheets-Sheet 1.

(No Model.)

S. H. PITKIN. WINDING REEL FOR HOISTING ENGINES.

No. 586,522. Patented July 13,1897.-

wifl zs ses 6 (No Model.) 2 SheetsSheet 2.

S. H. PITKIN.

WINDING REEL FOR HOISTING ENGINES.

N0. 586,522. Patented July 13, 1897.

UNITED STATES PATENT OFFICE.

STEPHEN I'l. PITKIN, OF AKRON, OHIO, ASSIGNOR TO THE \VEBSTER, CAMP doLANE MACHINE COMPANY, OF SAME PLACE.

WINDING-REEL FOR HOlSTlNG-ENGINES.

SPECIFICATION forming part of letters Patent No. 586,522, dated July 13,1897.

Application filed August 2 9 y 1 8 9 6- To all whom it may concern.-

Be it known that I, STEPHEN H. PITKIN, a resident of Akron, in thecounty of Summit and State of Ohio, have invented certain new and usefulImprovements in Winding-Reels for Hoisting-Engines; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to an improvement in winding-reels forhoisting-engines.

The usual manner of arranging the parts of winding-reels is to place theclutches outside of the reels, as the distance between the reels islimited by the centers of the shaft-compartments, and such space is notsufficient for the accommodation of the clutches ordinarily used. lViththe clutches outside of the reels the engine centers are sofar apartthat a central bearing for the main shaft is essential.

The object of my invention is to assemble the reels and clutches on thecenter of the shaft, thus bringing the engine centers closer together,dispensing altogether with the center bearing for the shaft andpermitting the use of more generous length of bearing of reelhub on theshaft than has been heretofore possible.

NVith this object in view my invention consists in the parts andcombinations of parts, as will be more fully described, and pointed outin the claims.

In the accompanying drawings, Figure 1 is a view in transverse sectionon the line w to of Fig. 2; and Fig. 2 is a view in side elevation, apart being in longitudinal section.

The hoisting-reels A are loosely mounted on the shaft B, the spacebetween the two reels being occupied by the driving-head 0. Each reel Ais composed of two parts a and b, the part a constituting the body ofthe reel, while the part b constitutes the outer side thereof. The parta consists of an elongated hub c, which can be of generous size andproject suiiiciently at each side of the reel so as to give the latter acentral bearing on the hub, a cylindrical shoulder or hub cl, on whichthe flat rope which is used on this reel is wound, and the side 6, thelatter being of sufficient size and strength to support the clutch-oper-$erial No. 604,307. (No model.)

ating devices, to be hereinafter described. Secured on the periphery ofthe part 6 is the brake-rim fiwhich latter is designed to be engaged bya brake g of any approved form for looking the reel against rotationwhen not locked to the shaft by the clutch. The outer side I) of thereel comprises a plate secured against the face of huh (I and to saidhub or to the hub c of the reel. This plate is, if desired, providedwith suitable strengtheningribs, and its outer edge or rim, as is alsothe inner edge of brake-rim f, is made flaring outwardly, so as to guidethe rope into position.

The hoisting-reels are used in pairs, as shown, and as both reels arealike it will be unnecessary to describe the other. The reels are looseon the shaft B and each has a composition bushing g in its bearing onsaid shaft. These bushings are made tapering externally to fitcorresponding bores in the hubs c of the reels, and each is made in twosections, which permit of their removal for repairs or for placingothers in position without removing the reel from the engine-shaft. Toreplace a bushing, it is simply necessary to first remove the uppersection of the old bushing and place the corresponding section of a newbushing in place and then give the reel ahalf-turn, so as to bring theremaining section of the old bushing on top. This section is thenremoved and replaced by a corresponding new section.

With the reels constructed with clutches on the outside it is impossibleto remove the bushings without first disconnecting the engine andremoving the driving-heads or friction-rings unless there is spacesufficient between the reels. As previously stated, however, this spaceis limited to the distance be tween shaft-compartment centers, which is0 usually insufficient. WVith my improvement by simply removing thecollar 13 at the outer end of the reel-hub and removing the cap frommain engine-bearing the bushing can be readily removed, one-half at atime, and new 5 ones substituted.

Located between the two reels is the driving-head or friction-ring O.This drivinghead or friction-ring is keyed to the shaft B and has apolished clutching-surface for each reel, the two surfaces beingseparated by .a central web.

, bands.

lVhile one friction-band or other form of clutch would in some casesprove sufficient and be preferred, I have shown two frictionbands foreach reel for the purpose of securing a more accurate balance of theparts. These bands E E are located side by side, the bands for one reelonly being shown, the ends of one band terminating at a pointdiametrically opposite the ends of the other band. The free ends of eachband are connected by links to the arms t' on rock-shaft F, which armsare so arranged with relation to the free ends of the band that whenmoved in one direction they clamp the band tightly around thefriction-surface of the driving-head and when moved in the oppositedirection they are disengaged from the driving-head and leave the latterfree to rotate within the The rock-shafts are each journaled in bearingscarried by the sections a of the reels, and the levers G, which actuatethe rock-shafts, are secured to the shafts between the bearingssupporting the latter and project inwardly toward the hub of the reeland terminate at points diametrically opposite each other. The free endsof the levers are connected by links H with the sliding collar I. Thesecollars slide on the hub of the reels and driving-head and are eachactuated by four rods J, which pass through the two sections at and b ofthe reel and are attached to the sliding sleeve K, which latter can beactuated byasteam or air cylinder, (not shown,) as described.

From the foregoing it will be seen that by moving the sleeve K outwardlyor away from its reel the collar I will be drawn toward its reel and thelinks H caused to move the inner ends of levers Gr outwardly away fromthe hub, thus firmly clamping both bands E to the friction-head andcausing one or both of the reels, as the case may be, to rotate with theshaft.

With this improved construction of reel, which is designed for a flatrope, and consequently narrow, ample space is provided between the reelsfor the driving-head or friction-ring, and a much shorter engine-shaftcan be used than has heretofore been possible.

It is evident that numerous slight changes might be made in the generalform and arran gement of parts herein shown and described withoutdeparting from the spirit and scope of my invention, and hence I wouldhave it understood that I do not limit myself to the precise details ofconstruction shown, but consider myself at liberty to make such changesand alterations as fairly fall within the spirit and scope of myinvention.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. The combination with a main shaft, a pair of fiat-rope-winding reelsloose on the shaft, of a driving-head secured on the shaft in the spaceintervening between the two winding-reels, and clutching mechanismconnected to the inside face of each reel and adapted to be made toengage the drivinghead whereby said reels are secured to the shaft.

2. In combination with a main shaft, fiatrope-winding reels loose onsaidshaft, and a friction-band attached to the inner face of each reel, of adriving-head having frictionsurfaces for the two clutches, keyed to saidshaft, and devices for tightening and loosening said bands,substantially as set forth.

3. The combination with a shaft, of a reel adapted to receive flat rope,the said reel being composed of two parts one of which has a cylindricalshoulder or seat for the rope and a'brake-rim, and a clutch attached toand carried by the reel for locking said reel to the shaft.

In testimony whereof I have signed this specification in the presence oftwo subscribin g witnesses.

STEPHEN H. PITKIN.

W'itnesses:

J. G. Porn, IV. G. PITKIN.

